Ensure that you have configured Node Manager and that you have
enabled automatic migration for at least one clustered server. For more
information, see Node Manager
Administrator's Guide.

Also ensure that you have configured a data source that can be used
by each migratable server to restore session data after being restarted
on another machine. You must configure each migratable server in the
cluster with this data source. For more information on configuring a
data source, see Configure JDBC generic
data sources.

To configure server migration in a cluster:

In the left
pane of the Console, expand Environment and
select Clusters.

Select the name
of a cluster for which you want to configure migration.

Click
Migration.

In the Available field, select the machine
to which to allow migration and click the right arrow. Repeat this
step for each machine.

Select the data source to be used for automatic migration or
click New to create a new data source.